Fixing the selection scrolling and the selection naming. - st - Simple Terminal
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---
(DIR) commit 8f1bef05025c0052603f7ca30552a43395b4c13f
(DIR) parent 8f47c4a4dea7272d72833d2ae26eacc3896d8f5c
(HTM) Author: Christoph Lohmann <20h@r-36.net>
Date: Sun, 26 May 2013 13:07:26 +0200
Fixing the selection scrolling and the selection naming.
Thanks p37sitdu@lavabit.com!
Diffstat:
st.c | 174 ++++++++++++++++---------------
1 file changed, 89 insertions(+), 85 deletions(-)
---
(DIR) diff --git a/st.c b/st.c
@@ -249,11 +249,17 @@ typedef struct {
int mode;
int type;
int snap;
- int bx, by;
- int ex, ey;
+ /*
+ * Selection variables:
+ * nb – normalized coordinates of the beginning of the selection
+ * ne – normalized coordinates of the end of the selection
+ * ob – original coordinates of the beginning of the selection
+ * oe – original coordinates of the end of the selection
+ */
struct {
int x, y;
- } b, e;
+ } nb, ne, ob, oe;
+
char *clip;
Atom xtarget;
bool alt;
@@ -390,6 +396,7 @@ static void selclear(XEvent *);
static void selrequest(XEvent *);
static void selinit(void);
+static void selsort(void);
static inline bool selected(int, int);
static void selcopy(void);
static void selscroll(int, int);
@@ -630,12 +637,12 @@ utf8size(char *s) {
}
}
-void
+static void
selinit(void) {
memset(&sel.tclick1, 0, sizeof(sel.tclick1));
memset(&sel.tclick2, 0, sizeof(sel.tclick2));
sel.mode = 0;
- sel.bx = -1;
+ sel.ob.x = -1;
sel.clip = NULL;
sel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
if(sel.xtarget == None)
@@ -658,25 +665,28 @@ y2row(int y) {
return LIMIT(y, 0, term.row-1);
}
+static void
+selsort(void) {
+ sel.nb.x = sel.ob.y < sel.oe.y ? sel.ob.x : sel.oe.x;
+ sel.nb.y = MIN(sel.ob.y, sel.oe.y);
+ sel.ne.x = sel.ob.y < sel.oe.y ? sel.oe.x : sel.ob.x;
+ sel.ne.y = MAX(sel.ob.y, sel.oe.y);
+}
+
static inline bool
selected(int x, int y) {
- int bx, ex;
-
- if(sel.ey == y && sel.by == y) {
- bx = MIN(sel.bx, sel.ex);
- ex = MAX(sel.bx, sel.ex);
-
- return BETWEEN(x, bx, ex);
- }
+ if(sel.ne.y == y && sel.nb.y == y)
+ return BETWEEN(x, sel.nb.x, sel.ne.y);
if(sel.type == SEL_RECTANGULAR) {
- return ((sel.b.y <= y && y <= sel.e.y)
- && (sel.b.x <= x && x <= sel.e.x));
+ return ((sel.nb.y <= y && y <= sel.ne.y)
+ && (sel.nb.x <= x && x <= sel.ne.x));
}
- return ((sel.b.y < y && y < sel.e.y)
- || (y == sel.e.y && x <= sel.e.x))
- || (y == sel.b.y && x >= sel.b.x
- && (x <= sel.e.x || sel.b.y != sel.e.y));
+
+ return ((sel.nb.y < y && y < sel.ne.y)
+ || (y == sel.ne.y && x <= sel.ne.x))
+ || (y == sel.nb.y && x >= sel.nb.x
+ && (x <= sel.ne.x || sel.nb.y != sel.ne.y));
}
void
@@ -762,22 +772,19 @@ getbuttoninfo(XEvent *e) {
sel.alt = IS_SET(MODE_ALTSCREEN);
- sel.ex = x2col(e->xbutton.x);
- sel.ey = y2row(e->xbutton.y);
+ sel.oe.x = x2col(e->xbutton.x);
+ sel.oe.y = y2row(e->xbutton.y);
- if (sel.by < sel.ey
- || (sel.by == sel.ey && sel.bx < sel.ex)) {
- selsnap(sel.snap, &sel.bx, &sel.by, -1);
- selsnap(sel.snap, &sel.ex, &sel.ey, +1);
+ if (sel.ob.y < sel.oe.y
+ || (sel.ob.y == sel.oe.y && sel.ob.x < sel.oe.x)) {
+ selsnap(sel.snap, &sel.ob.x, &sel.ob.y, -1);
+ selsnap(sel.snap, &sel.oe.x, &sel.oe.y, +1);
} else {
- selsnap(sel.snap, &sel.ex, &sel.ey, -1);
- selsnap(sel.snap, &sel.bx, &sel.by, +1);
+ selsnap(sel.snap, &sel.oe.x, &sel.oe.y, -1);
+ selsnap(sel.snap, &sel.ob.x, &sel.ob.y, +1);
}
- sel.b.x = sel.by < sel.ey ? sel.bx : sel.ex;
- sel.b.y = MIN(sel.by, sel.ey);
- sel.e.x = sel.by < sel.ey ? sel.ex : sel.bx;
- sel.e.y = MAX(sel.by, sel.ey);
+ selsort();
sel.type = SEL_REGULAR;
for(type = 1; type < LEN(selmasks); ++type) {
@@ -801,7 +808,8 @@ mousereport(XEvent *e) {
if(!IS_SET(MODE_MOUSEMOTION) || (x == ox && y == oy))
return;
button = ob + 32;
- ox = x, oy = y;
+ ox = x;
+ oy = y;
} else if(!IS_SET(MODE_MOUSESGR)
&& (e->xbutton.type == ButtonRelease
|| button == AnyButton)) {
@@ -812,7 +820,8 @@ mousereport(XEvent *e) {
button += 64 - 3;
if(e->xbutton.type == ButtonPress) {
ob = button;
- ox = x, oy = y;
+ ox = x;
+ oy = y;
}
}
@@ -859,15 +868,15 @@ bpress(XEvent *e) {
gettimeofday(&now, NULL);
/* Clear previous selection, logically and visually. */
- if(sel.bx != -1) {
- sel.bx = -1;
- tsetdirt(sel.b.y, sel.e.y);
+ if(sel.ob.x != -1) {
+ sel.ob.x = -1;
+ tsetdirt(sel.nb.y, sel.ne.y);
draw();
}
sel.mode = 1;
sel.type = SEL_REGULAR;
- sel.ex = sel.bx = x2col(e->xbutton.x);
- sel.ey = sel.by = y2row(e->xbutton.y);
+ sel.oe.x = sel.ob.x = x2col(e->xbutton.x);
+ sel.oe.y = sel.ob.y = y2row(e->xbutton.y);
/*
* If the user clicks below predefined timeouts specific
@@ -880,12 +889,9 @@ bpress(XEvent *e) {
} else {
sel.snap = 0;
}
- selsnap(sel.snap, &sel.bx, &sel.by, -1);
- selsnap(sel.snap, &sel.ex, &sel.ey, +1);
- sel.b.x = sel.bx;
- sel.b.y = sel.by;
- sel.e.x = sel.ex;
- sel.e.y = sel.ey;
+ selsnap(sel.snap, &sel.ob.x, &sel.ob.y, -1);
+ selsnap(sel.snap, &sel.oe.x, &sel.oe.y, +1);
+ selsort();
/*
* Draw selection, unless it's regular and we don't want to
@@ -893,7 +899,7 @@ bpress(XEvent *e) {
*/
if(sel.snap != 0) {
sel.mode++;
- tsetdirt(sel.b.y, sel.e.y);
+ tsetdirt(sel.nb.y, sel.ne.y);
draw();
}
sel.tclick2 = sel.tclick1;
@@ -907,14 +913,14 @@ selcopy(void) {
int x, y, bufsize, size, i, ex;
Glyph *gp, *last;
- if(sel.bx == -1) {
+ if(sel.ob.x == -1) {
str = NULL;
} else {
- bufsize = (term.col+1) * (sel.e.y-sel.b.y+1) * UTF_SIZ;
+ bufsize = (term.col+1) * (sel.ne.y-sel.nb.y+1) * UTF_SIZ;
ptr = str = xmalloc(bufsize);
/* append every set & selected glyph to the selection */
- for(y = sel.b.y; y < sel.e.y + 1; y++) {
+ for(y = sel.nb.y; y < sel.ne.y + 1; y++) {
gp = &term.line[y][0];
last = gp + term.col;
@@ -940,20 +946,20 @@ selcopy(void) {
* st.
* FIXME: Fix the computer world.
*/
- if(y < sel.e.y && !((gp-1)->mode & ATTR_WRAP))
+ if(y < sel.ne.y && !((gp-1)->mode & ATTR_WRAP))
*ptr++ = '\n';
/*
* If the last selected line expands in the selection
* after the visible text '\n' is appended.
*/
- if(y == sel.e.y) {
+ if(y == sel.ne.y) {
i = term.col;
while(--i > 0 && term.line[y][i].c[0] == ' ')
/* nothing */;
- ex = sel.e.x;
- if(sel.b.y == sel.e.y && sel.e.x < sel.b.x)
- ex = sel.b.x;
+ ex = sel.ne.x;
+ if(sel.nb.y == sel.ne.y && sel.ne.x < sel.nb.x)
+ ex = sel.nb.x;
if(i < ex)
*ptr++ = '\n';
}
@@ -1016,10 +1022,10 @@ clippaste(const Arg *dummy) {
void
selclear(XEvent *e) {
- if(sel.bx == -1)
+ if(sel.ob.x == -1)
return;
- sel.bx = -1;
- tsetdirt(sel.b.y, sel.e.y);
+ sel.ob.x = -1;
+ tsetdirt(sel.nb.y, sel.ne.y);
}
void
@@ -1082,13 +1088,13 @@ brelease(XEvent *e) {
selpaste(NULL);
} else if(e->xbutton.button == Button1) {
if(sel.mode < 2) {
- sel.bx = -1;
+ sel.ob.x = -1;
} else {
getbuttoninfo(e);
selcopy();
}
sel.mode = 0;
- term.dirty[sel.ey] = 1;
+ term.dirty[sel.oe.y] = 1;
}
}
@@ -1105,15 +1111,14 @@ bmotion(XEvent *e) {
return;
sel.mode++;
- oldey = sel.ey;
- oldex = sel.ex;
- oldsby = sel.b.y;
- oldsey = sel.e.y;
+ oldey = sel.oe.y;
+ oldex = sel.oe.x;
+ oldsby = sel.nb.y;
+ oldsey = sel.ne.y;
getbuttoninfo(e);
- if(oldey != sel.ey || oldex != sel.ex) {
- tsetdirt(MIN(sel.b.y, oldsby), MAX(sel.e.y, oldsey));
- }
+ if(oldey != sel.oe.y || oldex != sel.oe.x)
+ tsetdirt(MIN(sel.nb.y, oldsby), MAX(sel.ne.y, oldsey));
}
void
@@ -1411,31 +1416,30 @@ tscrollup(int orig, int n) {
void
selscroll(int orig, int n) {
- if(sel.bx == -1)
+ if(sel.ob.x == -1)
return;
- if(BETWEEN(sel.by, orig, term.bot) || BETWEEN(sel.ey, orig, term.bot)) {
- if((sel.by += n) > term.bot || (sel.ey += n) < term.top) {
- sel.bx = -1;
+ if(BETWEEN(sel.ob.y, orig, term.bot) || BETWEEN(sel.oe.y, orig, term.bot)) {
+ if((sel.ob.y += n) > term.bot || (sel.oe.y += n) < term.top) {
+ sel.ob.x = -1;
return;
}
if(sel.type == SEL_RECTANGULAR) {
- if(sel.by < term.top)
- sel.by = term.top;
- if(sel.ey > term.bot)
- sel.ey = term.bot;
+ if(sel.ob.y < term.top)
+ sel.ob.y = term.top;
+ if(sel.oe.y > term.bot)
+ sel.oe.y = term.bot;
} else {
- if(sel.by < term.top) {
- sel.by = term.top;
- sel.bx = 0;
+ if(sel.ob.y < term.top) {
+ sel.ob.y = term.top;
+ sel.ob.x = 0;
}
- if(sel.ey > term.bot) {
- sel.ey = term.bot;
- sel.ex = term.col;
+ if(sel.oe.y > term.bot) {
+ sel.oe.y = term.bot;
+ sel.oe.x = term.col;
}
}
- sel.b.y = sel.by, sel.b.x = sel.bx;
- sel.e.y = sel.ey, sel.e.x = sel.ex;
+ selsort();
}
}
@@ -1905,7 +1909,7 @@ csihandle(void) {
tputtab(1);
break;
case 'J': /* ED -- Clear screen */
- sel.bx = -1;
+ sel.ob.x = -1;
switch(csiescseq.arg[0]) {
case 0: /* below */
tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
@@ -2401,8 +2405,8 @@ tputc(char *c, int len) {
*/
if(control && !(term.c.attr.mode & ATTR_GFX))
return;
- if(sel.bx != -1 && BETWEEN(term.c.y, sel.by, sel.ey))
- sel.bx = -1;
+ if(sel.ob.x != -1 && BETWEEN(term.c.y, sel.ob.y, sel.oe.y))
+ sel.ob.x = -1;
if(IS_SET(MODE_WRAP) && (term.c.state & CURSOR_WRAPNEXT)) {
term.line[term.c.y][term.c.x].mode |= ATTR_WRAP;
tnewline(1);
@@ -3212,7 +3216,7 @@ drawregion(int x1, int y1, int x2, int y2) {
int ic, ib, x, y, ox, sl;
Glyph base, new;
char buf[DRAW_BUF_SIZ];
- bool ena_sel = sel.bx != -1;
+ bool ena_sel = sel.ob.x != -1;
if(sel.alt ^ IS_SET(MODE_ALTSCREEN))
ena_sel = 0;